Code of Federal Regulations > Title 40 > Chapter I > Part 60 > Subpart VVVV > Appendix - Table 1 to Subpart VVVV—Large Municipal Waste Combustor Carbon Monoxide Limits

Regulations last checked for updates: May 30, 2026

Title 40 - Protection of Environment last revised: Aug 30, 2026

Appendix - Table 1 to Subpart VVVV—Large Municipal Waste Combustor Carbon Monoxide Limits

[Parts per million by volume]

Municipal waste combustor technology	New large municipal waste combustors
Municipal waste combustor technology	Carbon monoxide emission limit (parts per million by volume) ^a	Averaging time (hours) ^b
Mass burn waterwall	76	4
Mass burn refractory	76	4
Mass burn rotary waterwall	76	24
Modular starved air	50	4
Modular excess air	50	4
Refuse-derived fuel stoker	100	24
Bubbling fluidized bed combustor	100	4
Circulating fluidized bed combustor	100	4
Pulverized coal/refuse-derived fuel mixed fuel-fired combustor	100	4
Spreader stoker coal/refuse-derived fuel mixed fuel-fired combustor	100	24

^a Measured at the combustor outlet in conjunction with a measurement of oxygen concentration, corrected to 7 percent oxygen (dry basis). CEMS data during warmup, startup, and shutdown, as defined in this subpart, are not corrected to 7 percent oxygen, and are used as measured. The averaging times are specified in greater detail in § 60.5940(b).

^b Averaging times are 4-hour or 24-hour block arithmetic averages.

authority: 42 U.S.C. 7401

source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.